This paper introduces the several methods of the combination of the natural language and the subject language in the web information retrieval,and discusses how to improve the function of the combination.

This paper investigates how to identify utterance topics in spontaneous spoken dialogues based on some shallow semantic analysis.

The author holds that except some adjuncts as topic shift markers, cohesive devices are widely used for discourse topic shift.

The present study aims to advance our understanding of the notion of discourse topic in connection with the discourse of live Chinese Badminton Commentary (henceforth CBC).